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The effect of adopting green SLA on key parameters of optical WDM networks

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Abstract

This paper presents green service level agreement (GSLA) awareness for the hybrid and traditional routing mechanisms by proposing a mathematical model for the amount of route greenness, and proposing two algorithms for the adoption of GSLA. The effect of the adoption of GSLA on a network that on average has green energy available for longer duration of a day is modeled by defining a one-step two-by-two Markov matrix and representing the transformation through a state machine. This work also examines a re-provisioning algorithm to deal with the effect of re-provisioning of the established lightpaths in case of a change in the topology of a network. To study the effect of adopting GSLA, two Scenarios with different arrival rates of connections and four performance parameters such as average emission per lambda, average connection length, GSLA satisfaction and success rate are defined and analyzed over NSFnet. Results reveal that adopting the GSLA by routing mechanisms decreases the resource efficiency with both light and heavy traffic in return for less reduction in emission as compared to green and hybrid routing mechanisms.

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Notes

  1. 3R regenerators perform Reamplification, Reshaping and Retiming of data pulse.

  2. In this work routing refers to the first step of serving a connection request as finding a proper route, which is followed by the second step, the Resource Assignment (RA) for the computed route.

  3. Emission topology change happens due to the fact that green energy availability has a finite duration and may not be available during the entire day.

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Authors and Affiliations

  1. Department of Internetworking, Faculty of Engineering, Dalhousie University, 1360 Barrington Street, A Wing, 2nd Floor, Room A208, PO Box 15000, Halifax, NS, Canada, B3H 4R2

    Yashar Fazili, Alireza Nafarieh, Muhammad H. Raza, Bill Robertson & William Philips

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  1. Yashar Fazili
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  2. Alireza Nafarieh
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  3. Muhammad H. Raza
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  4. Bill Robertson
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  5. William Philips
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Correspondence to Yashar Fazili.

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Fazili, Y., Nafarieh, A., Raza, M.H. et al. The effect of adopting green SLA on key parameters of optical WDM networks. J Ambient Intell Human Comput 7, 371–384 (2016). https://doi.org/10.1007/s12652-016-0364-5

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  • DOI: https://doi.org/10.1007/s12652-016-0364-5

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